:root {
    --elv-primary: #00a8cc;
    --elv-primary-dark: #008ba8;
    --elv-accent: #ff7700;
    --elv-accent-dark: #e06600;
    --elv-sidebar-bg: #1e293b;
    --elv-sidebar-text: #94a3b8;
    --elv-sidebar-hover: #ffffff;
    --elv-bg: #f8fafc;
    --elv-card-bg: #ffffff;
    --elv-border: #e2e8f0;
    --elv-text: #334155;
    --elv-text-bright: #0f172a;
    --elv-sub: #64748b;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--elv-bg); color: var(--elv-text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; font-size: 13px; line-height: 1.6; overflow-x: hidden; }
a { color: inherit; text-decoration: none; transition: 0.2s; }

.elv-app-layout { display: flex; min-height: 100vh; }

.elv-sidebar { width: 220px; background: var(--elv-sidebar-bg); flex-shrink: 0; padding: 30px 20px; display: flex; flex-direction: column; justify-content: space-between; position: fixed; top: 0; bottom: 0; left: 0; z-index: 100; }
.elv-sidebar-logo { margin-bottom: 35px; }
.elv-sidebar-logo img { height: 38px; width: auto; max-width: 160px; object-fit: contain; }
.elv-sidebar-nav { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.elv-sidebar-nav li a { display: block; padding: 10px 14px; color: var(--elv-sidebar-text); font-size: 14px; font-weight: 600; border-radius: 6px; }
.elv-sidebar-nav li a:hover, .elv-sidebar-nav li.active a { background: rgba(255,255,255,0.08); color: var(--elv-sidebar-hover); }

.elv-sidebar-footer { font-size: 12px; color: #64748b; border-top: 1px solid rgba(255,255,255,0.08); padding-top: 15px; }

.elv-main { flex: 1; margin-left: 220px; padding: 25px 35px; max-width: 1400px; width: calc(100% - 220px); }

.elv-topbar { background: #ffffff; border: 1px solid var(--elv-border); border-radius: 8px; font-size: 12px; height: 40px; padding: 0 15px; display: flex; justify-content: flex-end; align-items: center; margin-bottom: 20px; }

.elv-notice { margin-bottom: 20px; padding: 12px 18px; background: #e0f7fa; border-left: 4px solid var(--elv-primary); border-radius: 6px; color: #006064; font-size: 13px; }

.elv-hero-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; margin-bottom: 25px; }
.elv-hero-card { background: #ffffff; border: 1px solid var(--elv-border); border-radius: 8px; overflow: hidden; display: flex; flex-direction: column; }
.elv-hero-img { width: 100%; height: 160px; background: #0f172a; display: flex; align-items: center; justify-content: center; }
.elv-hero-img img { max-width: 100px; max-height: 100px; object-fit: contain; }
.elv-hero-body { padding: 15px; flex: 1; display: flex; flex-direction: column; justify-content: space-between; }

.elv-content-layout { display: grid; grid-template-columns: 1fr 300px; gap: 25px; margin-bottom: 25px; }

.elv-stream-list { display: flex; flex-direction: column; gap: 15px; }
.elv-stream-card { background: #ffffff; border: 1px solid var(--elv-border); border-radius: 8px; padding: 15px; display: flex; gap: 15px; align-items: center; transition: 0.2s; }
.elv-stream-card:hover { border-color: var(--elv-primary); transform: translateY(-2px); box-shadow: 0 6px 15px rgba(0,168,204,0.08); }
.elv-stream-thumb { width: 100px; height: 80px; background: #f8fafc; border: 1px solid var(--elv-border); border-radius: 6px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.elv-stream-thumb img { max-width: 60px; max-height: 60px; object-fit: contain; }
.elv-stream-info { flex: 1; min-width: 0; }

.elv-widget { background: #ffffff; border: 1px solid var(--elv-border); border-radius: 8px; padding: 18px; margin-bottom: 20px; }
.elv-widget-head { font-size: 14px; font-weight: bold; color: var(--elv-text-bright); border-bottom: 1px solid var(--elv-border); padding-bottom: 8px; margin-bottom: 12px; }

.elv-pill-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.elv-pill-item { display: inline-block; padding: 4px 10px; background: #f1f5f9; border: 1px solid var(--elv-border); border-radius: 20px; font-size: 12px; color: var(--elv-text); }
.elv-pill-item:hover { border-color: var(--elv-primary); color: var(--elv-primary); }

.elv-box { background: #ffffff; border: 1px solid var(--elv-border); margin-bottom: 20px; padding: 18px; border-radius: 8px; }
.elv-box-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 10px; margin-bottom: 15px; border-bottom: 2px solid var(--elv-primary); }
.elv-box-title { font-size: 15px; font-weight: bold; color: var(--elv-text-bright); }

.elv-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.elv-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }

.elv-card-item { border: 1px solid var(--elv-border); padding: 12px; text-align: center; background: #ffffff; border-radius: 6px; transition: 0.2s; }
.elv-card-item:hover { border-color: var(--elv-primary); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,168,204,0.08); }
.elv-card-img-box { width: 50px; height: 50px; margin: 0 auto 8px; display: flex; align-items: center; justify-content: center; background: #f8fafc; border-radius: 4px; border: 1px solid var(--elv-border); }
.elv-card-img-box img { max-width: 40px; max-height: 40px; object-fit: contain; }
.elv-card-name { font-size: 13px; font-weight: 600; height: 36px; overflow: hidden; margin-bottom: 6px; color: var(--elv-text-bright); }
.elv-card-price { font-size: 15px; font-weight: bold; color: var(--elv-accent); margin-bottom: 8px; }
.elv-btn-buy { display: block; width: 100%; padding: 5px 0; background: var(--elv-primary); color: #ffffff; font-size: 12px; font-weight: bold; text-align: center; border-radius: 4px; }
.elv-btn-buy:hover { background: var(--elv-primary-dark); }

.elv-row-item { display: flex; align-items: center; justify-content: space-between; padding: 9px 8px; border-bottom: 1px dashed var(--elv-border); font-size: 13px; }
.elv-row-item:last-child { border-bottom: none; }

.elv-detail-layout { display: flex; gap: 30px; background: #ffffff; border: 1px solid var(--elv-border); padding: 25px; border-radius: 8px; }
.elv-detail-media { flex: 0 0 250px; text-align: center; }
.elv-detail-img-wrap { width: 210px; height: 210px; margin: 0 auto 12px; border: 1px solid var(--elv-border); border-radius: 6px; display: flex; align-items: center; justify-content: center; background: #f8fafc; padding: 10px; }
.elv-detail-img-wrap img { max-width: 170px; max-height: 170px; object-fit: contain; }
.elv-detail-info { flex: 1; }
.elv-detail-name { font-size: 18px; font-weight: bold; color: var(--elv-text-bright); margin-bottom: 15px; padding-bottom: 10px; border-bottom: 1px solid var(--elv-border); }
.elv-detail-meta-box { background: #e0f7fa; border: 1px solid #b2ebf2; padding: 12px 18px; border-radius: 6px; margin-bottom: 20px; display: flex; justify-content: space-between; align-items: center; }

.elv-form-group { margin-bottom: 15px; }
.elv-form-label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 13px; color: #475569; }
.elv-input { width: 100%; height: 38px; background: #ffffff; border: 1px solid var(--elv-border); border-radius: 4px; padding: 0 12px; outline: none; font-size: 13px; }
.elv-input:focus { border-color: var(--elv-primary); }
.elv-btn-submit { width: 100%; height: 44px; background: var(--elv-accent); color: #ffffff; font-size: 15px; font-weight: bold; border: none; border-radius: 4px; cursor: pointer; transition: 0.2s; }
.elv-btn-submit:hover { background: var(--elv-accent-dark); }

.elv-footer { background: #ffffff; border: 1px solid var(--elv-border); border-radius: 8px; color: var(--elv-sub); padding: 25px 15px; text-align: center; margin-top: 30px; font-size: 13px; }
.elv-footer-links { margin-bottom: 8px; }
.elv-footer-links a { color: var(--elv-text); margin: 0 10px; font-weight: 500; }
.elv-footer-links a:hover { color: var(--elv-primary); }

@media (max-width: 992px) {
    .elv-sidebar { position: static; width: 100%; height: auto; }
    .elv-app-layout { flex-direction: column; }
    .elv-main { margin-left: 0; width: 100%; padding: 15px; }
    .elv-hero-grid { grid-template-columns: 1fr; }
    .elv-content-layout { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .elv-grid-4, .elv-grid-2 { grid-template-columns: 1fr; }
    .elv-detail-layout { flex-direction: column; }
    .elv-detail-media { flex: 1; }
}